Sound-reproducing machine



April 12, 1921.

H. L. T. BUCKLE SOUND REPRODUCING MACHINE Filed Nov. 5. 1924 sheets-snm1 EL?, l.

/ 'I ze 2 .mvs/vron HTTORNEY f A 1624 578 April 1927. H L. T. BUCKLE s ySOUND REPRoDpcING MACHINE Fned Nov.v 5, 1924 4 sheets-sheet s finan/verApril 12. 1927.

1,624,578 H. l.. T. BUCKLE SOUND REPRODUCING MACHINE Filed Nov. 5, 19244 sheets-sheet 4 -v `recorded inthe record tablet.

Patented Apr. 12, 1927.

i rena/e UNITED STATES PATENT GFFIC E,

HORACE LEOPOLD 'rocken BUCKLE, or'vrnvvsnnr, ENGLAND, Assreivonfrovieron TALKiNG MACHINE COMPANY, A oonron'nrion or NEW JERSEY.

SOUNDeREP'RODCING MACHINE.

Application filed November 5', 19554, Serial No. 747,882, and GreatBritain February 5, 1924.

My invention relates to sound reproducing machines or talking machines,and particularly to those machines wherein the angularvelocityy of theturntable and the record rotated thereby may be constantly and regularlyincreased or diminishedv during the travel of the reproducer over a discrecord during the reproduction of sound. type of vtalking machine` hascertain advantages over thoe machines wherein the angular velocity ofthe turntable and record 1s maintained constant during the reproductionofsound'from a disc recordparticularly in the length of a selectionwhich may be n those machines whereinv the angular speed of theturntable is so varied, a. much longei selection can be recorded on thetablet than can be when it is rotated at a constant angular vvvelocity.f

My invention relates then to the recordingor reproducing of 'sound onand from a record tablet in which the angular speed of the rotation ofthe tablet or record is constantly increased, if the recorder orreproducer moves inwardly from the periphery toward the center of. theltablet in recording or reproducing sound, or is constantly decreased,if the recorder or reproducer moves outwardlyv from the center towardthe periphery of the tablet Or recordin recording or reproducing sound.A

One of the objects of the present invention is to providein a mechanism.of the type above specified, improved means for accurately increasingor reducing the angular velocity of the turntable by varying theposition of the governor friction pad by and from the tone arm withoutsubstantially limitingor restricting the free swinging movement-ofthetone arm.

A further object of my invention is to provide improved means forsubstantially converting a machine which will operate tov rotatearecordat a variable angular velocity and hereinafter termed for brevitya variable speed machine, into a machine which will rotate the record ata constant angular velocity and hereinafter termed for brevity aconstant speed machine, and conversely, from a constant speed machineinto a variable speed machine.

A further object of my invention is to produce a talking machine whichmay be converted into a constant speed machine or This a variable speedmachine at willlby merely effecting a simple adjustment, preferablyaccomplishedby throwing a lever into one f position for 'constantspeed77 rccordreproduction and into another position for variv` ablespeed record reproduction.

A further object of my invention is to provide a machine of theinterchangeable or convertible type above referredtowith a speedadjusting mechanism which may be operated to increase or diminish thespeed of the rotation of the turn-table whether the machine be operatingas a constant speed machine or as a variable speed machine.

It has heretofore been proposed to rotate V the turn-table slowly duringthe recording and reproducing of sound, when the'needle or stylus is atthe periphery of the record tablet and ata gradually increasing angularspeed as the stylus moves toward the cen- V ter ofthe record so that thelinear speed of that portion of the sound record groove, which is inengagement with the stylus at any time, will. be constant(constant'needle speed). To give a constant needle speed'toy 80'v therecord, the angular speed of rotation ofV the turntable must varyinversely with the distance of the stylus from the center ofthe record.But in such constant needle speed mechanisms, with a l2 inch recorddisc, 85A

wherein the sound groove begins near the periphery of the disc, and endsfor instance 2 inches from the center of the disc, the angular speed ofthe record at the end of the reproduction must be substantially three9otiines greater than itis at the commencement. In such constant needlespeed ma chines, therefore, wherein the variation of the turntable speedis produced by varying the speed of the motor, the governor must becapable of giving an acceleration of from lowest operative speed tohighest operative speed ofy at least one to three. It is diliicult toconstruct a governor which willregulate properly over so wide a range ofspeed, but lou it is essential that' the governor shall control thespeed of the motor at all times withy absolute accuracy, becauseotherwise the re production will'not be in tune.

Moreover, in constant needle speed re- Jthis drag is over- 11o' come toa greatextcnt in reproducing sound at a constant angular speed, becauseo'l' the high linear speed ot' the groove under the stylus and themomentum ot the turntable. lint in constant needle speed talking machilies.` the angular speed ot the turntable is sloiv when the stylus isat the peripher),T ot' the record and the drag on the motor at this timeis difficult to control by the `governor and tends to malte thereproduction oit sound out ot tune.

rI`he object ot my invention is to obtain a record and a machine withwhich it may be played wherein a considerably longer selection may berecorded and reproduced on a record of given diameter than can bereproduced at a constant angular speed, and which will be tree trom thedilliculties above noted.

A further object ot my invention is to accelerate the angular speed otthe turntable at a considerably lovver `ate than that necessary toproduce constant needle speed.

A. further object ol my invention is to rotate a record on a variablespeed 1nachine during the reproduction ol sound from the peripheralconvolution ot the groove considerably taeter than it would be rotatedin reproducing sound from the peripheral grooves of aconstant-needle-speed record, but considerably slovvcr tha it would berotated in reproducing sound from the corresponding peripheral groovesot' a constant angular speed record. This operation also has theadvantage that the drag ot the needle at the peripheral portion of arecord is satisfactorily orercome by the. momentum ot the turntable,while the acceleration ot the motor troni theslow to the high speed, maybe made to be comparativelj7 small, and well 'Within the certain andaccurate control ot a well designed and constructed llvball governorn1echanism.

Further objects ot in v invention will appear in the specilication andclaims below.

In the drawings forming a part ott' this specification and in which thesame relierence characters are employed throughout the various views todesignate the same parts,

Fig. 1 is a plan view ot a portion ot a talking machine embodying nrvinvention with tone arm and turntable omitted iter the sake ot'clear-ness but with the positions ot the saine indicated in dot and dashlines. In this view the mechanism is set to operate a variable speedmachine and the parts are in the relative positions in which they arewhen the reinfoducing stylus is in the outermost or largest convolutionot' a sound record groove.

Fig. 2 is a plan vien' similar to Fig. 'l but with the parts in thepositions in which they are when the reproducing stvlus is in thatconvolution of the sound record groove ot smallest diameter; that is tosay, nearest the center ot the record.

Fig. 3 is a plan vievv ot the mechanism shown in Figs. 1 and 2 but withthe mechanism set to operate as a constant speed machine, oit the typeused to reproduce orn dinarj,r records.

Fig. il a side elevational view ol a portion ol" a turntable, the tonearm, the goose neck and the reproducer. In this ligure also isillustrated a portion ot the mechanism comprising my invention and moreparticularl),1 the manner in Which the mechanism is attached to andactuated by thc tone arm. lhe pivotal mounting ot' the variable speedcam lever or member is here shown in vertical crosssection.

Fig. 5 is a plan view and Fig. G is a side elevational view of thel'riction pad carrying member.

Figs. 'i' and 8 arc respectively plan and side elevational vievvs ot thefriction pad controlling member.

Figs. 9 and 10 are respectively plan and side elevational views ot themain conversion motion member.

Fig. 1l is a vertical sectional view on the line 11-11 of Fig. 1.

Fig. 12 is a vertical sectional View on the line 12-12 ot Fig. 2.

Fig. 123 is a vertical sectional view on the line lh-13 ot Fig. 3.

lhe talking machine to which my invention may be applied or adapted maycom prise the niotoilioa1d l. to the under side ot which is secured themotor trame 2 in which is Ajournaled the spring barrel 3 provided withthe. usual driving gear l driven by said spring barrel and meshing withand driving a worm 5, 'last on the turntable spiiulle The said spindle Gmay be provided \vith a worm gear 7 meshing with and driving a Worm 8 onthe governor shaft J which is journaled in bearings 10 on the motortrame 2.

Above the motor-board 1 are the turntable 11 mounted on and rotated byand with the spindle (5, and the tone arm 12, the outer end of which maybe provided with a gooseneck 13 to which may be attached a sound box orreproducer 111 adapted to hold a stylus 15 in position to cooperate withthe record groove in a disc record 1G placed on the turn table 11.IVhile other llyball governor mechanisms may be used in carrying out myinvention, I pre'ler to employ a construction which I have found to bevery sensitive and accurate when operated over great ranges ot speed andwhich is disclosed in I.iettei"s=l.atent ot' the llnited States, No.1,520,008, granted December 21:3, 192% Such a llvball governor mechanismcoinprises the governor sha'lt f) upon which is mounted a governor disc17 relativelvtrec to slide on the governor shaft9:1ongitudinallytliereof, and preferably provided with a -huborcollar18`integral therewith. Y. Also -a weight or flyball'22 by a screw 23,said Screws 23 serving to secure the springs 2O and the rigid members 21firmly together and to the weights or iiyballs 22.

Between the fixed collarl 19 and the hub 18 ofthe governor ydisc 17 andtending to hold them apart is a spiral compression springv 24l whichVsurrounds the governor spindle-9.

A'In tliis'governor mechanism in order to prevent the pulll of theweights 22 on the governor disc `17 from becoming excessive, theAweights'22 are mountedvon the connectingmembers'between the fixed collar19 and thegovernor disc 17 substantially nearer to the fixed collar thanto the governor disc, the distance ofthe weights from the i'ixedcollarwbeing5for-example, from one-half to one-thirdof the distanceofthe weights from the governor disc.

The 4pull ofthe weights increases rapidly with the distance that theymove away from the axis ofthev rotation of the shaft and therefore it isdesirable that the weights should'notA move too far away from the axisof the Shaft and consequently they should be connectedto the spindle bythe relatively short rigid arms 21.

Cooperating with the friction disc 17 is a frictionpad 25k mounted onand carried by the friction pad carrying member 26. As the governorrotates the weights 22 iiyoutwardly tending to straighten the slightlycurved springs 2O and'to pull the governor disc 17 towardtheleft (in Fig. 1) and to compress the spring 24. The extent to which the governordisc moves to the left is Ceterminedv by they position of the frictionpad 25-and consequently the speed at which the governor andthe motorcontrolled thereby shall operate is determinedjand regulated by theposition ofthe friction pad'25 with respect 'to the governor'disc 17.

Referring now particularly to Figs. 1 and 2" wherein the parts are shownso adjusted as to cause the machine. to operate as a variable speedmachine, on the base platey 27 suitablysecured to the motor-board 1 byscrews 28vis pivotally mounted the variable speed controllingV cammember 29, the same comprising an arm 30 preferably provided at itsouter end' with an antifriction roller 31 mounted on a pin or screw 32fixed to said arm, saidY roller being adaptedl to smoothly litt into aslot 33 in an arm or bracket rigidly secured to the underside ofthe tonearm 12 as by screws or rivets, and having the free end thereof extendingunder the turntable 11 as-clearly shown in Fig. 4.

Said member 29 also comprises a cam 36 and a rather long pivot pin 37'rigid therewith and preferably fitted into a socket 38, rigidly` mountedin the base plate 27, and providing aV smooth bearing for said pivot pin37.

In the bottom of said socket 38 is preferably seated a ball 39 forming athrust bearingfor the pivot pin 37.

To prevent the accidental removal ofthe member 29 from the plate 27,said pivot pin .is preferably provided with a groove 49 into whichlits'the free oset end41 of the bracket'42 rigidly secured to the baseplate 27 by a screw 43, said free end 41 being provided with asemicircular. recess which fits closely around and adjacent the bottom`of the rgroove 41 in the pivot pin 37.

The cam surface 36 ofthe cam 36 ispre'ferably arranged so that itdecreases or re-A cedes toward the axis of the variablespeed cam member29 as the sound-boxfmoves to ward the center of the turntable.

The cam surface 36 is arranged to coop-- erate with a friction padcontrolling mem-- ber 44 which preferably comprises a bell crank leverhaving onearm 45 provided at its free end with an antifrictionv roller46 mounted to rotate smoothly on a vpin or stud 47 on said lever and tonormally bearagainst the cam surfaceBG. The other arm 48 of the lever.44 is preferably provided.' with a straight edge 49 extending radiallyfrom the axis of the pivot pin 50 which is rigidly mounted in the lever44. The pivot pin 50 is rather long and is smoothly Vjournaled in asocket 51 (seeFig. 12) which in turn is rigidly mounted in and carriedby the main conversion member 52; In the bottom of this cup or socket 51is thrust ball bearing 53 upon which the lower end ofthe pivot pin 5()rests. The accidental removalV of the friction pad controlling member 44from its bearing in the socket 51. is preferably prevented by a bracket54 which may be rigidly secured to the member 26 by a screw 55A,said'bracket having a free offset end 54 adapted to extend over theupper surface of the bellcrank lever 44 and to bear upon the upper endof thepivotA pin 50.

The friction pady carrying member 2G (see Figs. 5 and 6) is a longirregularly shaped member and carries V'near one end thereof adownwardly extending bracket or arm 56 in the free end of which ismounted the friction pad 25. Vhen mounted on thel plate 277 this bracketor arm 56 extends downwardly through a suitable opening 27 titl over thegovernor and into the path of the governor' disc 17. Un the upper sideol said member 2G and near the end thereof is an antifrictiou roller 57mounted to turn on a pin or stud 58, while the other end of said member'2G is provided with a relatively long rigid pivot pin 59 extendingdownwardly therefrom and fittingl into a socket- (39 (sec l1 ig. ll)rigidly secured to the speed adjustment member Gl. rl`he lower end ofthis pivot pin 59 preferably rests on a ball thrust bearing 02 in thebottom of said cup or socket GO and said pin smoothly lits into the boreof said socket (30. To prevent the accidental removal of the frictionpad carrying,l member 2li from said socket 60, l, preferably provide abracket (i3 secured to the speed adjustment' member el by a screw G4,said bracket having an overhaningl upper end 63 adapted to bear on thetop of the pivot pin 59. On the underside of the member 2G l jn'eferably provide a stud or projection (35 adapted to bear ou and slideover the plane upper surface of the base i plate 27 so that suchfriction pad carryingr member may swing on its pivot pin 59 smoothly ina. horizontal plane parallel to the upper surface of the base plate 27.

lVhen the member 2G is mounted in the manner above referred to, theanti/friction roller 57 at thc outer end thereof is in the plane of thearm 4S of the friction pad controlling member -l-Ll as the latter swingsabout its pivot pin and the straight edge 49 ol said arm 4:8 is normallyin engagement with said roller 57.

About the pivot pin 59 of the friction pad carrying' member 2G a springGo' is preferably coiled, one end of said spring; beine,r hooked overthe edge of the speed adjustment member (l and the other end ol saidspring being; hooked over the edge of said friction pad carrying member,the tension of said spring GG beingr such as to tend to throw thefriction pad carrying member 2G in an anticlockwise direction (Fig. l)about the axis of its pivot pin 59 to normally hold the roller 5Sagainst the straight edge t9 of the friction pad controlling memberelli.

The speed adjustment member 6l comprises a two armed lever, to the endof one arm 67 of which the said friction pad carrying member 2Gpivotally connected, as above described, and to the other arm GS ofwhich is attached a handle G9. A pointer 70 adapted to be manually movedwith the member Gl over a suitable dial 7l to differentI positions is atthe end of the arm (58. This speed adjustment member Gl is pivotallymounted on a stud (see Fig. 13) ri gidly secured to and extendingupwardly from the base plate 27, a friction washer 73 being jn'cfcrablypassed over the stud 72 before the speed adjusting member (il is placedthereon so that the washer T23 is inlei-posed between the member 6l andthe top ot the plate 27. Another friction washer 7a is preferably placedon the stud 72 and above the member 6l so that the speed adjustinermember is located between the two friction *ushers 73 and 74. The stud72 is also preferably provided with a circumferential channel or groovejust above the upper friction washer 74 for the reception of a U-shapedbuckled spring` 7G which when slipped into the channel 75 applies afriction to the free movement of the member b'l and holds the saidmember Gl lirmly in any adjusted position.` The operation of this speedadj ustingI mechanism will be further described below.

The main motion conversion member 52 is pivotally mounted on the baseplate 27 on a pivot pin 77, a washer 78 (see Fig. 10) beingl preferablyinterposed between the base plate and the member 52 so that the arms ofthe lever or member 52 swing in a plane parallel to but just above theplane oit' the top surface of the base 27. The base plate 27 andmotor-board l are both provided with alined arc-shaped slots 79 so thatthe socket or cup 5l may project freely therethrough and swing about theaxis of the lever 52 without contact with the base place 27 or themotor-board l (see Fig. 12). This arcshaped slot 79 is concentric withthe axis 0f the pivot pin 77. y

Projecting.;` outwardly 'from the axis of the stud or pivot pin 77, themember 52 is provided with an arm S0, the outer end of which is providedwith an oil'set shoulder nl extending upwardly therefrom, and throughthis offset end or shoulder 81 is threaded an adj usting screw 82,preferably provided with a lock nut 83, and lying in the plane of theend of the arm 48.

The opposite end of the member 52 is provided with a pin or stud 84 towhich one end of a link S5 is pivot-ally attached, the other end of saidlink being pivotally connected to the free end of one arm 86 of a bellcrank lever S7 by a pivot pin 88. The other arm S9 of the bell cranklever 87 is provided with a handle 90 by means of which the bell cranklever 87 may be manually swung or moved on its pivot pin 91 lixedlymounted in the base plate 27. This member 52 with the link 85 and bellcrank lever 87 constitute the main operative parts of what may be termedthe conversion mechanism.

Also secured to the base plate 27 by a screw 92 is an arm 93 having anend 93 upturned into the path of the. movement of the member about itspivot 59 but below and out of the plane of the end of the arm of themember del. This arm 93 may be adjustably positioned so as to preventany excessive movement of the member 26 into an anticlockwise directionabout its pivot 59 during the manipulation of the'conversion movement.It may here be notedthat when the conversion motion lever 87 is `in the'position shown in F ig. l, then the ymechanism isset for variable speedoperation and when the lever 87 is thrown to 180othe position shown inFig. 3 then the mechanism isset to operate as aconstant speedmachine. Bymaking that end 85 of the link 85 which is attachedto the conversionmotion lever 87 curved so that it substantially fits around f the hub ofthe lever 87, the contact of the Aclockwise ldirection and the contactof the convex'edge of the said'curved end 85 of said link 85 with vthedownwardly offset end 89 of the arm 89 yforms a limit or vstopmotion forthe member 87 in a clockwise direction. By swinging, then, the lever 87to the limits ofitsfmotion in either direction, the 'talking machineabove described is most easily and readily converted from a constantspeed'machine into a variable speed machine and vice versa.

To provide for the vfree and unrestrained movement of the vsocket or cup60 about the axis of the pivot pin 72 ofthe speed adjustment member'61`,the base plate 27 is provided with an arc-shaped recess 94 and themotor-board is provided witha similar arc-shaped hole 94 in registrationtherewith as is clearly shown lin Fig. 11. :Stop pins 95, 95 may berigidly attached to the base plate 27 to limit the movement ofthe arm 68in either direction.

Having now described with considerable particular-ity the structuralarrangements speed operation, the turntable 11 is assumed..

to be vturning in aclockwise direction driven fromk the motor, thespindle 6 of Vwhich is turning in a clockwise direction. The governor isrotating and the centrifugal Vforce of the iyballs or weights 22 hasdrawn the governor disc 17 up against the face of the friction pad 25.The turntable 'may be as# sinned to be turning comparatively slowly inthis position, the stylus 15 being assumed to be inthe outermostconvolutions 96 of the record Agroove at the point 98. Y

As the tone arm is swung transversely over the Vface of the record byreason of the engagement kof the stylus with the sound record groove,the arm Vor bracket 84 is swung 'with it from the position shown in fulllines inFig. 1, lslowly into 'and through the first position shown tothe left in F ig. 1 "in Adotted lines, and finally yto the secondposition shown to the left in dotted lines wherein the stylus is inengagement with the innermost convolutions 99 of the sound record grooveand at the point 100.

This slow motion of 4the arm or bracket 84 causes the variable speedcontrol cam member 29 to slowly swing about the pivotal axis of the pinor stud 37 in ananticlockwise direction from the position shown in fulllines in Fig. 1 to that shown in Fig. 2. During this slow swingingmovement of the member 29, theroller 46 on one end vof the arm of thefriction pad controlling member 44 follows vdownwardly on the camsurface 86 by reason of the pressure exerted by the spring 66 on thefriction pad carrying'member 26, lthe roller 57 on the endof which isheld spring pressed against the straight edge 49 of the arm 48 of themember 44. Thus the roller 46 is held pressed against the cam surface 86throughout @he traverse of the tone arm 12 over the record 16 during`the reproduction of sound therefrom.

But as vthe friction pad controlling member 44 thus slowly swings in 'ananticlockwise direction about its pivot pin 50 permitting 'the frictionpad carrying member 26 r-to `thus slowly swing about its pivot pin 59 inan anticlockwise direction, the vfriction pad 25 is constantly slowlymoved to the left into the position shown in Fig. 2. lhecentrifugalforce developed `by the rotation of the governor shaft 9 draws and holdsthe face of the governor disc against the pad andthe speed of the motortherefore constantly increases throughout the travel of the tone armover 'the recordlduring the reproduction of sound therefrom.

Vhether the rate in the increase in the speed of the motor be constantor variable depends upon the shape of the -cam 86. The operation may beeither, and if the recordfbe originally recorded in a master'tablet by amechanism controlled by a similar cam, then'the reproduction of soundfrom such a frecord will be like the original sound recorded. Myinvention comprehends theoperation of a variable speed machine whereinthe rate in the change in the speed is constant or variable.

During vthis reproduction of sound at a variable speed the only parts ofthe .speed controlling mechanism which are actuated by the arm orbracket 34 are the variable speed controlling cam member 29, thefriction pad controlling member 44 and the friction pad carrying member26. All the -other, parts of the said mechanism shown 'in Figs. 1 and 2are unaected yby the 'movement of the tonearm.

If now it should happen either from 'the 1111111111 For 1111111111111111111111011 111' :1 111111111111111' S111eetio11 1'111'01'11011in 11110 1'e1'o1'11 111111111.'n @111:11 for insinnee. :1s 111e pitch of111e 511111011011 11e/11111' too 111011 o1' 1011' :1S reproduced on 111emachine. the 01111111101' 111:11y 11111011' the pointer ot 111e Spoededjnntinent 1111111111111' Gl to 111e right to deereosae 111e speed of1:1111 1110101' 11nd to lower 111e 11111111 o1 111e Fe1ee tion111111111' reprodneed o1' to 111e 11e-ft to i11- ereafe 111e Speed of111e 1110101' $11111 1'11iee the 11111011 o1. 111e eeieetion 111111111:reproduced. 111111111 this Speed edinetine; 111111111101' G1 is swung tot11e right` 1111` end of 111e 11111311011 111111 carrying; 111e11111e1'QG eonneeted thereto swings to 111e 1'1111111, 11111111111; 111e 11:1110111'1'1'- 11111; 1111111111111' 211 11110111'` 111e w11111111111111111111111' 111'1'1vid11d 1111 111e 11111111' 11n 111e Straight edge19 and :1t 11111 1111111111 tinie drawing! 111e reid 111e1111. 1111':211 :11111111 1111' S1 ':1i; 1'11t 11111111 110. 11'1111'11, :1s:1110111 111151111111111` 111111111111111' lnnlieo :1 s110111' 11111111'1o n 111:1111' 1101'111111 lo the axis 01; 111e 110111111111' s111111',.(1. '.111111. 111ove111e11t ot 111e 1111111111111' 211: therefore,moves 1110.11'11'1'1011 11111125 11'1111'11'111'1111111' to the fece o1E111e dise '17. 111111 :111 111e 111111111 time slightly against it,1.11115 'touring 111e disc 1T to Vthe rig'lit :11111 reducing 111e speedof' 111e `governor :1nd 111e 1111-11'11:111i:1n1 001111011111111111110111'. Conversely, 11 movement o1' the lever (1S to tlie 1e'1tSlightly nieves the 111111 25 to the left :11111 inerenffee 111e Speedof 111e 1110101'. A 001151111111111111 111011011 of the 111'111 (1Sproducen :1 relatively slight 111011011 01" the 'friction 111111 Q5toward oi.' 111111111' from the friction 11nd l? :1nd thun is operated ndelicate speed adjusting; mechanism te i11- erease 01' diminish the1111111111 01 111e motor. B111; this manuel operation ot 111e speedadjusting 1111111111111' (il does not :111eet o1' 1110110 in :my 11:11;t11e variable Speed Controlling 11111111111111151111 or change 111e:11111111111101111 o1 the ports tliereo with respect to 11:11:11 other.1111115 While 111e speed 1'111'1'11111' 1110011- 1111is111 is operatedto reprodnee 50111111 1111'0111 11 record 111111011, t11e 1111011111:11' be vnried Without inierrupting' the 001111111101111 oper ationof the speed varying 11'1e1'11s1nisn1.

After the 50111111 recorded 111 record tablet 111111 been reproduced,the sound 110x 111:117 11e lifted 'from 111e reeord :1nd 811111111 iothe lei't 0111111111111' to the periphery of the 1'111101'1'1 :1nd:11111111 1111101111 in 111e 501111131 record grooves 'for :1 eeeondreproduction o1' 110111111 11'11111 the record Without stopping the111111111'. In thus swinging the tone :11111 0111111111111' to 111eperiphery ot 111e record, the 1'11111111le Speed 001111111111111'1:11111 1111111111111' S29 11111 11e 1111111111 in :1 clockwisedirection about its pivot pin 31' 'forcing 111e bell crank 1eve1' in 11.eloekwise direction 11110111 its pivot pin 50 :1nd 11111111 forcing the111111 eerrying 111111111101' to turn in e clockwise direction :111011tits pivot pin 59, thus fore ing' 111e '11111111111 11:111 :1113111111t11e governor dise l1 111111 111111111113y 111e `5:101'111'1101' dise1,7

:1 sound 11:11'11' 111 111e 1111111111011 11111111111 in Fie'. '1.,1111115 redneingr 111e epeed o1 11111 governor to that appropriate1"'01' 111e reproduction of 510111111 1:10111 111e outermost eonvohnionoof the record. It for :my reason 111e stylus 11e not swung;011111111111111 to :1 position correspond 11111' to 1111111111111111111111 by the 11F-.merel 98 but to 11011111, 11011111101111111111111011111111 111e positione` 9:3 :11111 1110, :1S '1101'1111111111111. 1:0 reproduce :1 Second time :1 Certain 11:11't o1. J111erecorded 511111111111011. 1111111 i1: will 11e 011Se1'ved that the1'0111'1' 11:15 of 111e 1111111111111' 4&1 willL 11e on tl111t 11:11:11o1' 111e ef1111 snrlnee 313 which 1101'111 1111011111; to 111e epeed :1twhiff-,11 the record should rotate `for 111111` 111111110111111' 11:11'tol. 111e reeord. 111 011101.' 1111111191 to w1n1teve1' 1109111011 111e511111111 111:1 1T 11o nioved over 111e '1:1111 111' 111e 1'111'111'11:11111 11111111 1111011111111 into 11111111111111111111; with 1111'`111|1'111ee 1111 111e record, 1111111 the speed o1 111e 11111111111111111'111 11e 11111 1'111'1'111'15 :111111-111 101' 111e1'1'111'01'11101'1011 o1 50111111 1'1'0111 1:11:11' 111111111111111'11:11'1l 01 111e record 1111111111. A111111' 11:11'11111 once 1:11'1111eet to 011er- 111'11 :1S :1 1111111111111, speed 111111111110, t11e111:111111110 111:1 1' 1111 operated 11110 :1n ordinary talkingY111:1111111111 1111 placing 111e Stylus on :my part 0'1" the record :1ndcorrectly reproducing 110111111 therefrom.

Referring' new to Figs. 2 :1nd 3, it 111:157 11e assumed that :111ertlie reproduction o1 sound 11'0111 f1 variable speed record 11:15 beeneo111pleted :1nd the 111111.11 :1re in the 11ositlon shown in F151. 2111111, Conversion 1110- tion member S9 1111s 1.1111111 swung 'lroni theposition shown in Fig'. 2 to 111e position 511011'11 1n Fig. 3. In5111115511111; 111e l111ndlo 90 110111 the 10mg position 10111111111111111111 posi# lion, the n1e1n11e1' Si' 111111 11111111511111115111111111111 Snbetantizdly 1.800 :1nd 11111 111111 85 111111y1.1111111 thrown 11 distnnee 11111111111111in11y 111111111 1o 111111111111111311 o1E 111e 1111'011' o1' 11111' 1'1'111111' o1' pivot pin 8S:1110111: 111e 1111111' 511 o1'` 1111' 1111111111111' 8T. Thislongitudinal 111111'1'111en ol: 111e 111111 W1 Swings 111e 111111.11111170111111111011 1111111111111' .52 in :1 Clockwise 1111110111111:111111111 ile 1111'01 11111 71' 12110111 111e 110111111011 111101111111 111111'. i to 111:11 1111111111 111 1""4 f. '1111111 11111111011111' 111e 11111111- 11111' V12 :1110111 its 1111'011 11111 TT1'111'1'11'11I 11111 V11'111- 111011111111 @1111111111111111111111111111' 1l 1111111111111'1111v 111111 :11111;` "111111 111:11'11111 11111 1.1111` 1111' 1111111111111 of the 1'011131.' 57:11131111111 1:1111 111111111111, 11115111 111111 110111 the 11111111"-11'1 :11111111111 111e. 1'11111 11111 fnee 36 until 111e 11:11'1 1e01"'1'110 111'111 1S encounters 111e `11'1111 11111'111'11111'1 end 1,13o1`i 111e rigid stop :11'111 113. A1501' 1111111 01111511111111111111the :11'111 11S is no 101111111' turned .1111:111 :intieioekwisedireetion 111' 111e tree 111111 of 111e pod Carrying 1111111111111' 2131111t t11e, pivotal socket 51 111 11'1111'11 11111 111111111111101111133' inein- 1Je1' 411 ifs 1111011111 1'01111111111111 lomove downwardly or in 11 clot-111111111 direction :1110111` 111e pivot1'1" carrying 1111' :11111 `J1 of the 11101111101' L14 donnWnrdI)7:11111 :111111 1'1'0111 11110 1:11111 S111'- 1111'11 511i. '11111111111111011 111111111111011 1111111111111' 52 is time turned :11101111`.its pivot 7T, the :11'111 80 is `swungftowardf t-he arm V448 iof the=pad controlling -'-1ne1nber 44 and the -end of: the adjusting screw 82finallyengages the 'backside of the arm 4-8. This-screw `82 -is soadjusted and set that when fthe :handle 90 of the member 87 has reachedthe position shown in Fig. 3, the end -of ythe screw 82 shall haveengaged the -arm 48 of the vpad controlling member 44 and'moved it aboutits pivot 50 and "with it the friction padcarrying member about isIpivot 59, a distance siu'iicient to bring the pad 25 into that position-which will cause the turntable to revolve at 'the speed v'usuallymaintained in reproducingl sound :from constant speed records,-that is`to say, into a `position which will cause -the turntable to revolve atsubstantially 78 revolutions permiuute. The parts are now inthep'osition Yshown yin Fig. 3. The free end of the arm 45 of the padcontrolling pmember is remote from the cam surface V'36. The 'tonearmmay be swung about vits pivot freely and in doing so it will swing thevariable speed control cam memher 29 about its :pivot 37 but -suchmotion is linoperative to produce an-y contact' between the-cam'surface36" and the rollerV 46. iWith the parts constructed, arranged anddisposed lin vthe manner above described, the tone arm is substantiallyjust as free to be swung over the record asit 4would be in an ordinaryConstant speed machine.

In thus swinging-the conversion ymotion lever from the position shown inFig. 2 to tha-t shown in Fig. 3, the variable speed mechanism is lthrowncompletely out of action and theA constant lspeed controlling mechanism,comprising 'the arm 80, the adjusting screw82 and the lock nut 83, isthrown Yinto operation to yset the governor for constant speedreproduction.

But having been thus set for constant speed reproduction, it maybe thatby reason of lfaulty adjustment or -wear ofthe parts that the turntable`is runninga little faster or a little slower than the standard speedof`78 revolutions per minute for Athe reproducion of sound from ordinarvconstant speed records and ifi for that or any lreason it is desired toincrease or diminish the speedof the motor it :is merely necessary toadjust the lever 68k slightly to the right to decrease :the speed, orslightly to the left to incre-ase the speed ofthe motor. And thisadjustment of the speed for constant speed operation is precisely likethat for variable speed operation in that no parts of the mechanism aremoved except `the Speed adjustment member 6l Land the pad Supporting orcarrying member 26, the friction pad on the kmeimber 26 beingm'oved overthe face of the friction disc 17 'and slightly against it when the lever'68 is moved 'toward the slow position andaway from the face of thegovernor disc 17 when 'the said Jlever is moved toward the fastposition.

It is to -benotcd that if Athe rigid stop arm 93 were to be omitted andthe conversion lever 87 were to beswung from the position shown in Fig.2 to that shown in Fig. k3, the pressure of the free end of'the padsupporting ymember 26 would continue to swing Ithe member let about itspivot and would hold the roller t6 again-st the cam surface 36 until theend ofthe screw 82 shall engage the back ofthe arm a8 ofthe lever del.The distancel which the friction 'pad might thus move away fromthegovernor disc 17 before the engagement, above referred to, of the screw83 withthe-baclof the arm 48 might be considerable, and enough to permitthe governor to rotate at an excessively high speed, possibly higherthan that at which it was designed to run, with the result that thegovernor might become broken .or strained to an extent suiiicient toinjure or interfere with its proper operation. The free end of the rigidarm 93 is therefore preferably adjusted so that the upturned end 93thereof will be engaged by the 'pad carrying member 2Gduringtheoperation of the motion conversion member as soon as the padreaches a position which permits the governor to revolve'a little fasterthan it does when the machine is being operated at its highest speed asa variable speed machine. Vhen, therefore, the motion conversion lever87 kis swung to the position shown in Fig. 3, the end of the yscrew 83should engage the back edge of the arm 48 just prior. to the completion`of its full movement, Yto move the member 26 slightly and out ofengagement with th-e upturned 4end 93 of the arm 93.

It will new be seen that lhave provided a mechanism in which a talkingmachine motor, 0r broadly, a talking machine, may be converted at willfrom a variable speed machine into a constant speed machine by merelythrowing the lever 87 from one position to another and a constant speedmachine may be similarly converted into a variable speed machine by asimple movement of the lever in a reverse direction. lVhet-her themach-ine be operating as a constant or as a variable speed machine,- thespeed of the motor may be increased or decreased by a speed adj ustinglever, the operation of which does not disturb in any way the adjustmentof the part-s of either the constant or thev variableV speed mechanism.

A minimum amount of work is .imposed upon the stylus when operating withmy invention. During the reproduction, the cam moves from a high to allow position and the roller slides or rolls 'down on the cam surface36. Upon the spring 66 is imposed'the work of moving the friction ipadvduring the reproduction of sound from a record. The cam merely controlsthe posin tion to which the 'lree end ot the arm i5 ot the member' ilmay move. The roller l? ich lows the cam surface and movement is in1-parted to the lever elfi by the Spring,T 66. The pressure between theroller lo and the cam surface 3G is slight during the reproduction otsound from a record and consequently the friction between the cam 3G andthe roller LG ia correspomlinnly alight. By mannali;T throwing themotion conversion lever S7, the speed varying niechanism 11u13,T bethrown at will ont ot operation and the pad will be simultaneouslypositioned with respect to the ,ejovernor disc for constant Speedoperation oi" the motor, and, conversely, by throwingY the lever 8T inthe opposite direction, the constant apeed varying mechanism thrownabsolutely ont ot ope ation and the speed varying,` mechanism ir throwninto operation, to convert the machine lfrom a variable to a constantspeed machine and vice versa.

l'lavinpT thun deecrihed in v inventii'in, what I claim and desire toprotect by Lettere Patent ot the United States ie:

Il. In a talking' machine, the combination with a motor, a turntable anda reproducer, ot a constant speed controlling mechanism, a variablespeed controlling mechanism actuated by said reprodncer, and aconversion member connected to both said mechanisms and manuallyoperative to alternately throw said mechanisme` into operative relationwith said motor.

2. In a talking,r machine, the combination with a motor, a turntable anda reproducer, ot a constant :speed controlling mechanism, a variablespeed controllino` mechanism actuated by said reproducern a convcinionmcmber connected to both said mechaiiisma and manuall5T operative toaltermiteliY throw said mechaniame into operative relation with :raidmotor, and manually operable means cooperating with Said .mechanisms toincrease or dccreaae the Spoed ot Said motor without dialurbingg iheadjuistmenta ol either oli said mechaniema.

-l. In a talltinn' machine, the Combination with a motor, a turntableand a reproducer, ol a consta t aperti controllingl mechanism, avariable speed ccmtrollinn mcchanifan ac tuuted by Said reprrnilucer, acouveraion member connected to both Said mechanianui and manuali)Yoperative to allernatcljiv throw said mechanisms into operative relationwith said motor, and menne to limiti the speed at which said motor mai7run during` the morement of said conversion member.

Ll. In a talkingr machine, the combination with a motor, a turntable anda rcpriulucer, ot a constant speed controlliiigi mechanism, a variablespeed controlling,` mechaniem actuated b v eaid rcproducer, a conversionmember connected lo both said i'nccl anielne and manually operative toalternately throw Said mechanisms; into operative relation with saidmotor, and means to prevent said motor from racing' duringI theoperation ol' said conversion member.

ii. ln a talking machine, the conibination with a motor, a turntable anda reproducer, including' a stylus to track in the groove oil a disesound record on eail turntable, oli a speed varying and controllingmechanism, and means'h to automatically pl'ogresaivel)f adjust saidmechaniem to accord with the position of the reproducer stylus withrepect to a record on said turntable to produce a continuallj,rincreasing angular speed ot said turntal'ile but a continuallydiminishing linear speed et the l roove at the pointe-t' the engagementot the Stylus therewith, as the reproducer movea toward the center. otl@aid turntable.

(i. In a talking;r machine, the combination with a motor, a turntableand a reproducer, including a stylus lo track in the `groom of a discsound record on Said turntable, of a speed varvlnrY and controllingmechanism, and means to automatically progressively adjust saidmechanism to accord with the position ot the reproducer stylus withrespect to a record on said turntable to produce a continuallydiminishingr angular speed olI rotation ot' said turntable but acontinually increasing; linear speed oi the groove at the point o theengagement ot the stylus therewith aa the reproducer moves toward the peiipheri7 oit said turntable.

7. In a talkingl machine, the combination ot a motor, a turntable and areplo'ducer, in eluding;v a stylus to track in the groove ot' a discsound record on said tin'ntable, of a speed varying and controllingrmecl'laniem, and means to automaticalljiT progressively adjust Saidinechanien'i to accord with the poration ot the reprodacer stylus withrespect to a record on Said turntable to produce a continuallyYincreasing; angular Speed of rotation ot said tinntablo but acontinually diminishing' linear speed ol the groove at the point ot theengagement oi the stylus there with, as said reproducer moves` to ardthe center oi said turntable and to produce a continually decreaainfi'angular speed o'l ro tation ol' wahl luriniablf-x but a continually increasing); linear Speed ol the `groove at the point oli the engagementot the st vlim4 therewith as Said reproducer moves toward the pcripheiwrot Said turntable.

Si. In a talking machine, the combination with a motor. a turntable anda reproducer, including` a stylua` to track in the groove oit a discsound record on said turntable, ot a speed varyingl and controllingmechaniem, and means to progvireasivelv automatically adjustsaidmechanism to accord with the position oi' the reproducer stylus withrespectto a, record on said turntable, to produce a conloo tinuallyincreasing angular speed of rota-tion of said turntable as saidreproducer moves toward the center of the turntable .and to produceaneedle speed of theperipheral convolutions of the record groove lowerthan that of the .peripheral,convolutionsof a constant-angular-speedrecord oi.' the saine size, and higher than that of the peripheralconvolutions ot va .constant-needle-speed record of the same type.

9. In a talking machine, the combination with a motor, a turntable and areproducer,

.including a stylus to track in the groove of .a disc sound .record onsaid turntable,'of a speed varying and controlling mechanism and imeansto vprogressively automatically yadjust said mechanism to accord withthe position of the reproducer stylus with .respect toa record on saidturntable to produce a .continually diminishing angular speed of therotation ot' said ,turntable as said reproducer moves .over saidturntable `toward .the periphery thereof and to produce va `needle speedof fthe peripheral .convolutions off said .record When said stylus is inlengagement therewith lower than that of spect ,to a record on saidturntable to produce a continually increasing angularspeed ot' said,turntable as said reproducer moves toward .the center of said turntableand a continually .diminishing angular `speed -`of rotation of saidturntable as saidreproducer moves toward 4the periphery of said recordand to produce a .needle Vspeed .of `the .peripheral convolutions ofsaid -disc record when .the stylus is in engagementitherewith lower`than .that .of fthe peripheral convolutions of a constant-angular-speedrecord of the same size, and ,higher than that of' the peripheralconvolutions of aconstant-needlespeed record ofthe same size. f 11. Ina.talkingimachine.the combination .with a turntable, a reproducer, .amotor .for rotating said turntable and `a governor mechanism comprising`a kgovernor disc, a `friction pad and centrifugal means fonholding saidgovernor disc against 'said pad kto control the speed of fsaid motor, ofmeans to operate said motor at `Will 'as a variable 'speed or''ajconstant speedjin'otor, comprising `'automatic speed varying .meansfor slowly 31110.' ingl jsjad ip'aid .wthrespeet vto said lgavernord-isc .to increase .the speed of said motor as `thereproducermoves toward the center of lsaid turntable and to decreasesaid speed as the reproducer lmoves toward the periphery ofsaidturntable, and manuallyoperableconversion means to throw at Willsaid speed varyingineans out ot operation" and to simultaneouslystationarily position said pad with respect to said governor disc forconst-ant speed operation of said motor and conversely -to `throw atWill said `automatic speed varying means into operationandsaid pad fromconstant speed operation position.

l2. In a Vtalking machine, the combination with a turntable, areproducer, a motor for rotating said turntable and .a governormechanism comprising a governor disc, a friction padand Centrifugalmeans for holding said .governor disc against said pad to control thespeed 'of said motor, ot vmeans to operate saidmotor at Will asavariablespeed or a constantspeed motor, comprisingautomatic speedvarying means for slowly Vmovingsaid `pad With respect to said governordisc to increase the speed of said .motor as said reproducer movestoward the center yof said vturntable .and .to decrease said speedas.said reproducer moves toward the periphery ot' said turntable, manuallyoperable conversion means A,to throw at will said speed varying meansout of operation and to simultaneously stationarily position said padWith respect to said governor `disc for constant speed operation ot saidmotor and conversely to throw .at Will said speed varying mea-ns intooperation from constant speed operation position, and manually operablespeed adjusting means to adjust said pad .to- Ward and aivay from vsaidgovernor disc Without changing the adjustment of said 'automatic speedvarying means, or of said constant speed operation Whether said motor isoperating as a constant or avariable speed motor when saidmanuallyadjusting ymeans are operated.

13.'. In a 'talking machine, lthe combinai tion Witha turntable, a.motor for rotating saidturntable fand a governor mechanism comprisinga,governor disc, a friction-pad and lvcentrifugal means .for holdingsaid governor disc against said pad'to control the speedo said motor, ofvariable speed controlling means ft'or gradually automatically movingsaid friction pad with respect .to saidgovernor disc to operate saidmotor as a variable speed motor', manually operable conversion means tothrow at will said Speed varying nieanssiont ooperation and rtosimultaneous- `ly stationarily[position said rpad with.. refepect tosaid 7 governor disctooperate said motoras'a eonstant speed 'motor' and.manuyally.operable speed adjusting ineansto .ad-

,just sadpad-vvith respectto said gOvernor disc .Without aiectingftheadjustment .of vlsaid automatic speed 'varyingmeans 0r of said constantspeed operation of said motor whether said motor is operating as avariable or as a constant speed motor.

14. In amachine tor reproducing sound from a dise sound record tablet inwhich the record oi sound is in the iorm el a spiral groove in a tacethereoi, the combination with a reproducer, a motor :lor rotating saidtablet, a governor mechanism comprising a `governor disc rotated by saidmotor, a lriction pad and centrifugal means tor drawing and holding saidgovernor disc against said pad during the rotation of said motor, ofvariable speed controlling means actuated by the reproducer to move saidfriction pad with respect to said governor disc to cause said motor togradually increase in speed as the reproducer moves toward the center ofsaid record tablet and to cause said motor to gradually decrease inspeed as the reproducer moves in the opposite direction, and means tothroiv at will said variable speed controlling means out ot' operationand to simultaneously adjust said pad into position tor constant speedrecord reproduction.

15. In a machine for reproducing sound from a disc sound record tabletin which the record oi sound is in the 'Forni of a spiral `groove in aface thereof, the combination with a reprodueer, a motor for rotatingsaid tablet and a governor mechanism comprising a governor disc rotatedhy said motor, a triction pad and centrifugal means for drawing andholding said governor disc against said. pad during the rotation of'said motor, of va riable speed controlling means actuated b v thereproducer to move said friction pad with respect to said Igovernor discto cause said motor to gradually increase in speed as the roproducermoves toward the center oit said record tablet and to cause said motorto lgradually decrease in speed as the reproducer moves in tho oppositedirection, means to throw at will said variable speed controllingr meansout oi operation and to simultaneously bringr said pad into position forconstant speed record reproduction, and manually operable speedadjusting means to vary the position of said pad with respect to saidgovernor disc to increase or diminish the speed of 'the motor withoutchanging the :uljustment oi. said automatic speed `'arying mechanism orof said constant speed operation whether said motor is operatingI at aconstant speed or at a variable speed when said speed adjusting meansare op erated.

1l (i. In a talking machine, the combination with a. reproducer, aturntable, a motor for rot-ating said turntable and a `governor connprising a `governor disc, a friction pad, and centrifugal means forholdingr said disc against said pad to control the speed of said motor,of mechanism to slowly move said pad to gradually vary the speed of saidmotor for variable speed operation, a mechanism to accurately positionand to hold stationary said pad for constant speed operi tion, aconversion member on which opera tive parts ot said mechanisms aremounted, and manually operated means for moving said conversion memberto alternately throw said mechanism into operative relation with respectlo said pad and governor disc to convert at will said machine from aconstant to a variable speed machine and 'from a vaA riable to aconstant speed machine.

li'. ln a talking machine, the combination with a reproducer, aturntable, a motor i'or rotating said turntable and a governorcoinprisinga `governor disc, a friction pad, and centrifugal means :torholding said disc against said pad to control the speed of said motor,oi mechanism to slowly move said pad to gradually vary the speed saidmotor for variable speed operation, a mechanism to accurately positionand to hold stationary said pad 'for constant speed oper tion, aconversion member on which operative parts ot said mechanism aremounted, manually operated means for moving said conversion member toalternately throw said mechanisms into operative relation with respectto said pad and governor disc to convert said machine at will from aconstant to a variable speed machine and iroln a variable to a constant`speed machine, and manual means operable independently oi saidmechanisms to move said pad with respect; to said disc to vary andadjust the speed oi. said motor. Y

18. In a talking machine, the combination with a motor, a governortherefor, a turntable driven by said motor and a rcproducer, ot avariable speed mechanism controlled by said rcpriiducer and acting onsaid gever nor to slowly vary the speed. olf said motor as saidreproducer travels over a record on said turntable, and conversion meansman ually operable to render said variable speed mechanism inoperativeand to simultaneously automatically set and hold said governor in aposition at which said motor will revolve said turntable at a speedsuitable for the reproduction oi sound from constant speed records.

1S). .ln a talking nflachine, the combination with a motor, a governortherefor, a turn table driven by said motor and a reproducer, oi' avariable speed mechanism controlled by said reproduecr and acting onsaid, governor to slowly ary the speed of said motor as saidreproducci.' travels over a record on said turntable, and conversionmeans manually movable into one position to throw said variable speedmechanism into operative relation to said motor and into anotherposition to render said variable speed mechanism inoperativeand tosimultaneously automatically set and hold said governorl in lili aposition at which said motor will revolve said t-urntable at a speedsuitable for the reproduction of sound from constant speed records..

20. In a.- talking` machine, the combination with a motor, a turntable,a reproducer and a governor including a governor disc and a friction padoperating therewith, of a variable speed mechanism actuated by saidreproducer to slowly change the position of said pad as said reproducermoves `over the turntable, and manually operable means for throwing atwill said variable speed mechanism into and out of operative relationwith respect to said governor, and for simultaneously automatici-illymoving Said pad to, and holding it .stationary in, a position at whichsaid motor will revolve said turntable at the speed required for thereproduction of sound from constant speed records when said variablespeed mechanism is out of said operative relation.

21. In a talking machine, the combination with a motor, a turntable, areproducer and a governor including a governor disc` and a friction padoperating therewith, of a variable speed mechanism actuated by saidreproducer to .slowly changethe position of said pad as said reproducermoves over the turntable, manually operable means for throwing at willsaid variable speed mechanism into and out of operative relation withrespect to said governor, and for simultaneously automatically movingsaid pad to, and holding it stationary in, a position at which saidmotor will revolve said turntable at the speed required for thereproduction of sound from constant spe-ed records when said variablespeed mechanism is out of said operative relation, and means independentor' said manually operable means to adjust the speed of said motor.

22. In a talking machine, the combination with a motor, a governortherefor, a turntable driven by said motor, and a reproducer, of avariable speed mechanism controlled by said reproducer and arranged toact on said governor to slowly vary the .speed of said motor as saidreproducer travels over a record on said turntable, and conversion meansmanually7 movable into two positions, in one of which said variablespeed mechanism is rendered operative by said conversion means and inthe other of which said variable speed mechanism is rendered inoperativeand said governor is automatically set to and held by .said conversionmeans in a position at which said motor will revolve said turntable at aspeed suitable for the reproduction of sound from constant speedrecords.

In testimony whereof, I have hereunto set my hand this seventeenth dayof October, 1924.

HORACE LEOPOLD TUCKER BUCKLE.

